At the same time, he wrote the music for the play Rapsod Polski, which was performed in Pruszków near Warsaw by a theatre group led by Bolesław Jastrzębski accompanied by a VIP band.

He wrote numerous songs for this band, including: After parting ways with the group Vox in 1987, he embarked on a solo career.

[7] In 2001, he was named Singer of the Year by Phonographic Academy of Poland and received the annual "Fryderyk" award as a distinction.

[8] On 10 December 2001, Rynkowski and Joe Cocker gave a joint charity concert in Warsaw, which culminated with a duet by the two (High Time We Went).

[10] This collaboration led to, that the album Ten typ tak ma, released the following year in 2003, was recorded with support from some of Joe Cocker's band, including Deric Dyer, Nick Milo and Jack Bruno, and bassist Dale Davis (Tina Turner, Amy Winehouse).

[12] In December 2011, he appeared in the multimedia spectacle 16.12.1981 directed by Łukasz Kobiela, which took place on the 30th anniversary of the pacification of the Wujek Coal Mine in Katowice.

[19] Due to the COVID-19 pandemic, Rynkowski, like many of his fellow musicians, was basically unemployed, which in turn plunged him into a deep emotional crisis.

To make matters worse, the singer had been experiencing increasing problems with mobility in his hip for some time, which made him realise that he would no longer be able to perform larger concerts or even tours.

[20] In 2011, his wife Edyta was finally able to persuade him to invest the rest of his savings in a rehabilitation centre at his home Brodnica, where people with limb and spinal injuries are helped, thus guaranteeing him and his family, also for the future, a secure income.